I would contact Ainsley Judge, the director/manager of the gear hub- I'm sure she would be happy to discuss that idea, though I don't know what she'd say.
Unfortunately I tend to think of bike thieves as falling into 2 categories- people who need a bike, and might take one thats not locked, or is locked poorly to get where they're going, but not for long term use and people who need 50 or a hundred dollars & have a jack & or angle grinder.
Both of those folks have an imidiate need, which a bicycle is the answer to. Possibly the first type of person might be satiated with a bike share pass, but, the bike share will need the bike back...
The best way to reduce bike theft, and many other crimes might be safe injection sites... but that's perhaps off topic for this forum.